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TOHO TTM-00BT Series Detailed Manual

Multi-channel board controller
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TOHO ELECTRONICS INC.
Multi-Channel Board Controller
Detailed Manual
Thank you very much for purchasing a Multi-Channel Board Controller.
The Multi-Channel Board Controller outputs control signals that match an input from
a thermocouple (a K/J thermocouple) or an input from a temperature input from a
resistance bulb (Pt100/JPt100) to a predetermined setting.
The product comes equipped with an RS-485 or an RS-232C for data
communications with a host computer.
For control output, the product is provided with up to eight open collector outputs,
along with event outputs consisting of 11 open collector outputs (eight temperature
alarm outputs, one heater wire break alarm, one SSR breakdown alarm, and one error
alarm), eight current detector inputs, and one voltage input.
Please read this detailed manual carefully and use this product correctly.
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Summary of Contents for TOHO TTM-00BT Series

  • Page 1 TOHO ELECTRONICS INC. Multi-Channel Board Controller Detailed Manual Thank you very much for purchasing a Multi-Channel Board Controller. The Multi-Channel Board Controller outputs control signals that match an input from a thermocouple (a K/J thermocouple) or an input from a temperature input from a resistance bulb (Pt100/JPt100) to a predetermined setting.

  • Page 2: Table Of Contents

    Contents 1. Operating precautions ......................3 2. Names and functions of the components ................4 Product diagram......................4 Names and functions ....................4 3. Installation ........................... 5 How to install the product ..................5 Where to install the product..................5 Outside dimensions....................

  • Page 3: Operating Precautions

    1. Operating precautions When the product reaches you, please ensure that the product you have received is of the following model which you ordered. ＴＴＭ−００ＢＴ−①−Ｒ−② Model: ① Input type ......0: Thermocouple input 1: Resistance bulb input ② Communication type:..M1: RS-485 M2: RS-232C To allow you to use the product safely, this detailed manual uses the following symbols: Mishandling despite this warning may result in the user's death, electric shock,...

  • Page 4: Names And Functions Of The Components

    2. Names and functions of the components 2.1 Product diagram Event output Control output Temperature input Voltage Communi- input cation Power CT input 2.2 Names and functions 2.2.1 SW1: Unit number change --- Change product unit numbers with the rotary switch. Unit number: 0 to F (hexadecimal) 2.2.2 SW2: Communication speed change --- Change the communication speed with DIP...

  • Page 5: Installation

    2.2.9 TB4: Voltage input terminal Voltage input terminal (input voltage range: 12 to 24V DC ±10%) Through-type terminal block: ML-40-S1BYF-2P (a Sato part) or equivalent 2.2.10 LED1: Communication A RXD lamp (green) 2.2.11 LED2: Communication B TXD lamp (green) 2.2.12 LED3: Power lamp (green) 2.2.13 LED4 to 11: Temperature alarm output lamps (red) 2.2.14 LED12: Alarm output lamp for heater wire break (red)

  • Page 6: Outside Dimensions

    3.3 Outside dimensions Board height 9-φ3.5 drill • Thermocouple input 29.2mm maximum • Resistance bulb input 39.1mm maximum Sub-board 36 × 114.5 (from the bottom of the board to the top of the part) 4. Making the connections 4.1 Terminal arrangement diagram 4.1.1 Thermocouple input Event output Control output...

  • Page 7: Terminal Arrangement

    4.1.2 Resistance bulb input Event output Control output Temperature input Voltage Communi- Power input cation CT input 4.2 Terminal arrangement 4.2.1 Temperature input (TB1: terminal block): For thermocouple input * For terminal numbers, see the carvings in the terminals. Terminal CH Terminal Terminal CH Terminal...
  • Page 8 4.2.5 Voltage input (TB4: terminal block) Terminal Polarity − 4.2.6 Control output (CN1: connector) Connector Terminal name O.C.: open collector output COM: common 4.2.7 Event output (CN2: connector) 4.2.8 CT input (CN3: connector) Connector Connector Terminal name Temperature alarm 1 output O.C. Temperature alarm 5 output O.C.

  • Page 9: Cautions On Making The Connections

    4.3 Cautions on making the connections Warning • Before making the connections, turn off this product. Otherwise you may get an electrical shock. Warnings • This product will not begin control for about 10 seconds after being turned on. (It will not activate its outputs or other components.) Be careful if you wish to use the product as an interlocking circuit.
  • Page 10 Parameter a) Identifier b) Name c) R/W d) Description and set range e) Remark Initial value (communication numerical data) TC, thermocouple; Pt, resistance bulb Setting R/W of the control settings Thermocouple input: Thermocouple K, 0.0 to 1300.0°C 00000 Thermocouple J, 0.0 to 800.0°C Resistance bulb input: PT100/JPT, -199.9 to 500.0°C R/W of the °C/°F □CF...
  • Page 11 Event output parameters a) Identifier b) Name c) R/W d) Description and set range e) Remark Initial value (communication numerical data) TC, thermocouple; Pt, resistance bulb E * F Temperature alarm R/W of the temperature alarm output*functional *: 1 to 8 output*functional setting setting 000 * *...
  • Page 12 Voltage input parameters a) Identifier b) Name c) R/W d) Description and set range e) Remark Initial value (communication numerical data) TC, thermocouple; Pt, resistance bulb R/W of the voltage input function setting Set a voltage input function Numerical When voltage is Function type data applied...
  • Page 13 Monitor window parameters a) Identifier b) Name c) R/W d) Description and set range e) Remark Measurement Used as a measurement monitor When over-scale: HHHHH (the same is true when the sensor has a wire break) When under-scale: LLLLL CT measurement R of the measured current of the heater current When reading is *: 1 to 8...
  • Page 14 Control parameters a) Identifier b) Name c) R/W d) Description and set range e) Remark Initial value (communication numerical data) TC, thermocouple; Pt, resistance bulb Set an SV limiter top limit R/W of the SV limiter top limit setting For the range, see 7.1 From the bottom limit to the top limit of the set range on page 16.
  • Page 15 Control parameters a) Identifier b) Name c) R/W d) Description and set range e) Remark Initial value (communication numerical data) TC, thermocouple; Pt, resistance bulb Set an operation quantity R/W of the operation quantity limiter, top limit setting limiter, top limit Set range: Operation quantity limiter, bottom limit setting to 100.0% 01000...

  • Page 16: Function Description

    7. Function description 7.1 Display range and set range of temperature input 7.1.1 Display range and set range of thermocouple input (JIS C 1602 - 1995) Set range with a Display range with a Set range without a Display range without decimal point decimal point decimal point...

  • Page 17: Temperature Alarm Output

    7.5 Temperature alarm output 7.5.1 Temperature alarm output: Compare the measurements with the setting value of the temperature alarm output and turn on and off the temperature alarm output. • Operation table of temperature alarm outputs 1. Deviation top/bottom limit 5.

  • Page 18: Heater Wire Break Alarm Output

    7.6 Heater wire break alarm output The output will be turned on if a heater wire break (no output even if the output is turned on) remains for at least 190mS. 7.7 SSR breakdown alarm output The output will be turned on if an SSR breakdown (there is output even if the output is off) remains for at least 190mS.
  • Page 19 7.9.3 Communications procedure This product returns a "response message" in response to a "request message" from a high-level computer. It therefore does not initiate a transmission. 上位コンピュータ が 本器が 上位コンピュータ が 本器が 送信 送信 送信 送信 上位コンピュータ 要求メ ッ セージ 要求メ...
  • Page 20 7.9.5 Composition of a request message (transmitted from a high-level computer to this product) n For codes ① to ⑧, see "7.9.9 Code description." n For specific examples of request messages, see "7.9.11 Examples of communications to be read" and "7.9.12 Examples of communications to be written." 1) Composition of a read request message □...
  • Page 21 7.9.6 Composition of a response message (transmitted from this product to a high-level computer) n For codes ① to ⑪, see "7.9.9 Code description." n For specific examples of request messages, see "7.9.11 Examples of communications to be read" and "7.9.12 Examples of communications to be written." 1) Response message in response to a read request message □...
  • Page 22 7.9.7 Composition of a memory bank function message n For codes ① to ⑫, see "7.9.9 Code description." n For specific examples of request messages, see "7.9.11 Examples of communications to be read" and "7.9.12 Examples of communications to be written." Note that the request is in lowercase characters.
  • Page 23 7.9.8 Setting and reading data collectively 1) Composition of a read request message All channels □ A R □ □ □ ① ② ③ ④ ―⑤― ⑦ ⑧ 2) Composition of a write request message All channels □ A W □ □ □ □ □ □ □ □ ①...
  • Page 24 7.9.9 Code description n Codes from ① STX to ⑫ memory bank function are expressed in ASCII codes. n For the ASCII codes, see "7.9.13. Table of ASCII codes." n For the procedure for conversion to ASCII codes, see communication examples 7.9.11 and 7.9.12.
  • Page 25 ⑧ BCC This is a check code for error detection and is the exclusive OR (EX-OR) of all characters from STX to ETX. ⑨ ACK It is an acknowledge code. If a message received by this product is error-free, this code will be incorporated in the "response message"...
  • Page 26 7.9.10 Communications precautions 1) Communications timing Set a sufficient response delay to make sure that this product is switched over from transmission to reception with regard to a high-level computer in using communications. See "7.9.3 Communications procedure" and "7.9.2 3) Setting a response delay." 2) Interval between requests In transmitting a series of "request messages"...
  • Page 27 8) Storing data other than a store request message Store all parameters in the EEPROM in either of the three cases described below, even if no store request message is received. If auto-tuning is started and ends normally. (Provided that only PID constants are saved.) 9) Changing the settings (SV or SV2) by communications during auto-tuning Even if the settings (SV or SV2) used in control for auto-tuning are changed by communications, the settings (SV or SV2) will not be changed until the auto-tuning ends.
  • Page 28 7.9.12 Examples of communications to be written Example: Request message: Requests that the temperature alarm output setting of EIF in channel 1 (High-level computer) of unit number 3 be changed to deviation top/bottom alarm + holding. In response to that, Response message: This returns a notice that the request message has been received.
  • Page 29 7.9.13 Table of ASCII codes ASCII code Code used ASCII code Number used − Minus Space ASCII code Code used ASCII code Alphabetical character used Space Lower case Lower case 7.9.14 Communications specifications 1) Communications standard category: Compliant with EIA standard RS-232C or RS-485 2) Communications systems : Network........
  • Page 30 4) Character : Start bit length ......Fixed at 1 bit : Stop bit length ......Fixed at 2 bit : Data length ......Fixed at 8 bit : Parity ........Fixed at no : BCC check ......Fixed at yes : Unit number ......
  • Page 31 7.9.15 Communication wiring 1) Connecting the RS-485 line 上位コンピュータ （ 親局） 本器（ 子局） High-level computer (parent stations) This product (mobile unit) Ｔ ／Ｒ （ Ａ ） Ｔ ／Ｒ （ Ａ ） Ｔ ／Ｒ （ Ｂ ） Ｔ ／Ｒ （ Ｂ ） 本器（...

  • Page 32: Specifications And Ratings

    8. Specifications and ratings 8.1 General specifications Power voltage 24V DC + 10% - 15% Power consumption 8W or less Insulation resistance Between inputs and outputs, 500V DC, 20MΩ or more Withstand voltage Between inputs and outputs, 500V AC, 1 minute Standard Temperature/ 23±10C°...

  • Page 33: Maintenance And Inspection

    9. Maintenance and inspection Symptom Check item Inaccurate measurement Is the sensor normal? (Connect a different sensor to the line. Does it show a similar symptom?) Is the sensor correctly connected? Is the correct sensor type set? (Is the sensor the same as the type setting entered in the product?) Are all the PV correction values set to the correct levels? The setting does not match...
  • Page 34 TOHO ELECTRONICS INC. Head office: 1-13-21, Tanashioda, Sagamihara Kanagawa 229-1125 Japan. Phone: +81-42-777-3311 Fax: +81-42-777-3751 47-9926...

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